Molex 0010021087 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0010021087 is an 8-position vertical connector header with 0.200" (5.08mm) pitch, designed for through-hole mounting in board-to-cable/wire applications. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance requirements. The part features unshrouded design, solder termination, and push-pull fastening suitable for automotive, industrial, medical, and telecommunications applications.

Substiute Parts

0010021087

MolexIn Stock: 11040010021087 Datasheet

Current PartRFQ

0010085081

MolexIn Stock: 11090010085081 Datasheet

MFR RecommendedRFQ

FWS-08-01-T-S

Samtec Inc.In Stock: 989FWS-08-01-T-S Datasheet

MFR RecommendedRFQ

FWS-08-02-T-S

Samtec Inc.In Stock: 806FWS-08-02-T-S Datasheet

MFR RecommendedRFQ

HFWS-08-01-T-S

Samtec Inc.In Stock: 754HFWS-08-01-T-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0010021087 is determined by the following critical parameters:

• Pitch - Mating: 0.200" (5.08mm) — exact match required
• Number of Positions: 8 — exact match required
• Number of Rows: 1 — exact match required
• Connector Type: Header — exact match required
• Contact Type: Male Pin — exact match required
• Mounting Type: Through Hole — exact match required
• Termination: Solder — exact match required
• Fastening Type: Push-Pull — exact match required
• Style: Board to Cable/Wire or Board to Board — compatible
• RoHS Status: ROHS3 Compliant — required for regulatory compliance

The substitute parts listed below meet all mandatory electrical and mechanical parameters. Variations in shrouding design, contact length, insulation material, and contact finish are permitted within the scope of functional equivalence, provided the core mating characteristics remain unchanged.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Molex 0010085081

The Molex 0010085081 is the manufacturer-recommended direct substitute. It maintains active product status and full ROHS3 compliance. This part is from the same manufacturer (Molex) and shares identical pitch, position count, and core electrical characteristics. The KK508/2599 series provides shrouded design with 1-wall protection, offering improved mechanical stability compared to the unshrouded original design.

Alternative Options: Samtec FWS and HFWS Series

The Samtec FWS-08-01-T-S, FWS-08-02-T-S, and HFWS-08-01-T-S connectors are active alternatives meeting all mandatory substitution criteria. These parts feature phosphor bronze contacts and alternative insulation materials (polyester glass-filled or liquid crystal polymer), providing enhanced thermal and mechanical performance. All three maintain ROHS3 compliance and unlimited moisture sensitivity rating.

Selection Basis:

• All substitute parts maintain active product status, ensuring long-term availability
• All parts achieve ROHS3 compliance and MSL 1 rating
• Electrical and mechanical compatibility is confirmed through matching pitch, position count, connector type, and termination method
• Samtec alternatives provide higher current rating (11.4A per contact) and voltage rating (500VAC) compared to the original specification

Frequently Asked Questions (FAQ)

Q: Can the Molex 0010085081 be used as a direct replacement for the 0010021087?

A: Yes. The 0010085081 is the manufacturer-recommended substitute. Both parts share identical pitch (0.200"), position count (8), connector type (header), contact type (male pin), mounting method (through hole), and termination (solder). The primary difference is the addition of shrouding (1-wall) on the 0010085081, which provides improved mechanical protection without affecting electrical compatibility.

Q: What are the key differences between the Molex and Samtec alternatives?

A: The Molex 0010085081 maintains the same insulation material (Polyamide PA66) as the original part. Samtec alternatives use different insulation materials: FWS series uses polyester glass-filled material, while HFWS series uses liquid crystal polymer (LCP). All three alternatives feature phosphor bronze contacts instead of brass, offering superior electrical and thermal characteristics. Contact shape differs on the Molex substitute (circular vs. square), while Samtec parts maintain square contact geometry.

Q: Are there any compatibility concerns with PCB footprints?

A: The 0.200" (5.08mm) pitch is maintained across all substitute parts, ensuring PCB footprint compatibility. However, variations in overall contact length and insulation height may affect mating depth and clearance. The Molex 0010085081 has increased insulation height (0.375" vs. 0.126"), which may require PCB layout verification. Samtec alternatives maintain lower insulation height (0.100"), closer to the original design.

Q: Which substitute part offers the best thermal performance?

A: The Samtec HFWS-08-01-T-S features liquid crystal polymer (LCP) insulation, which provides superior thermal stability and mechanical properties compared to standard polyamide or polyester materials. This part is suitable for applications requiring enhanced temperature performance within the -55°C to 105°C operating range.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (Molex 0010085081, Samtec FWS-08-01-T-S, FWS-08-02-T-S, and HFWS-08-01-T-S) are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity rating, meeting current regulatory requirements for automotive, industrial, medical, and telecommunications applications.